Journal of Low Temperature Physics

, Volume 101, Issue 5–6, pp 1079–1098 | Cite as

Thermodynamics of ad-wave superconductor near a surface

  • L. J. Buchholtz
  • Mario Palumbo
  • D. Rainer
  • J. A. Sauls
Articles

Abstract

We study the properties of an anisotropically paired superconductor in the presence of specularly reflecting surface. The bulk stable phase of the superconducting order parameter is taken to have dx2-y2 symmetry. Contributions by order parameter components of different symmetries vanish in the bulk, but may enter in the vicinity of a wall. We calculate the self-consistent order parameter and surface free energy within the quasiclassical formulation of superconductivity. We discuss, in particular, the dependence of these quantities on the degree of order parameter mixing and the surface to lattice orientation. Knowledge of the thermodynamically stable order parameter near a surface is a necessary precondition for calculating measurable surface properties which we present in a companion paper.

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Copyright information

© Plenum Publishing Corporation 1995

Authors and Affiliations

  • L. J. Buchholtz
    • 1
  • Mario Palumbo
    • 2
  • D. Rainer
    • 2
  • J. A. Sauls
    • 3
  1. 1.Department of PhysicsCalifornia State UniversityChico, ChicoUSA
  2. 2.Physikalisches InstitutUniversität BayreuthBayreuthGermany
  3. 3.Department of Physics & AstronomyNorthwestern UniversityEvanstonUSA

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